Improvement in gun-locks



J. HULTEE, Gun-Lock. No. 10,927. Patented May 16, 1854.

z N N N-PETERS. PHOTO-LITHOGRAPHER. WASHINGTON. D C.

' PATENT Fries...

JAMES HULTS, OF BERLIN TO\VNSHII, DELAIVARE COUNTY, OHIO.

IMPROVEMENT IN GUN-LOCKS.

Specification forming part of Letters Patent No. 10,927, dated May 16,1854.

T0 (0% whom it may concern:

Be it known that I, J AMES HULrs, of Berlin Township, (Alum GreekPost-Office,) in the county of Delaware and State of Ohio, have inventeda new and useful Improvement in GunLocks, and I do hereby declare thatthe following is a full and exact description thereof, reference beinghad to the accompanying drawings, making a part of this specificationFigure 1 being a side view of my improved gun-lock with its cock thrownforward, Fig. 2, a side view, representing the lock as fully cooked;Fig. 3, a section through the line 2 z, Fig. l; and Fig. 4, a sectionthrough the line at m, Fig. 2.

Similar letters indicate like parts in all the figures.

The nature of my invention consists in such a construction of asingle-triggered gun-lock that it can be readily adjusted in such aman-. ner that the cock can be detached from its cocked position by theslightest touch upon the trigger, or in such amanner that a smart pullupon the trigger will be required to detach the cock from its catch; andwhen adjusted in the former manner the cock will be held securely untilthe trigger is touched, by which I am enabled to give to my improvedlock all the advantages of the doubletriggered lock, and with lessliability to accidents.

Insteadof making an angular shoulder or notch in the tumbler d of myimproved lock, for the reception of the point of the sear 0 when thelock is cocked, I make a notch of such a shape that it requires a rigidand positive action upon the sear to cause it to hold the cock in itscocked position. To produce this said rigid and positive action upon thesear, I employ the jointed levers k and f, arranged within the lock, andcombined with the sear, as represented in the drawings. f, being anangular lever, is jointed at its extremity to the pin or projection Z onthe inner side of the plate of the lock, and at its angle to the leveris. The lower extremity of the lever k fits into a recess in the upperside of the sear 0, near its rear end. The inwardly-projecting arm ofthe lever f is operated upon, near its junction with 7t, by the lever b,which presses down upon f with sufficient force to throw the said leversf and 7- into a straight position, parallel with the plate of the look,when the cock is drawn back to its cocked position, which position willbe attained by them at the moment that the point of the sear falls intothe aforesaid retainingnotch in the tumbler; consequently, the saidlevers being in a straight position with relation to each other, atright angles to the rear portion of the scar, and being operated upon ontheir front sides by the spring I), will hold the cock firmly andsecurely in its cocked position, and yet a slight touch of the triggerupon the under side of f will detach the cock from its catch and allowit to spring forward. The head of the spring I) fits into a recess inthe bridle c, and is held therein by the bridle-pin A set screw, j, isinserted through the plate of the lock for the joint of the levers f andk to strike against when they reach their proper position. By soadjusting the said set screw as to allow the levers f and 7a to pass tothe rearward of a straight position before they are arrested by the saidscrew, more power will be required to. throw forward the levers anddetach the cock from their holding influence upon the sear and thetumbler than when the said levers are in a straight position. It willtherefore be perceived that the set-screw j can be so adjusted as toallow the cock to be detached from its catch when in a cooked positionby a slight touch upon the trigger, or in such a manner as to require asmart pull upon the trigger to operate the cock.

Having thus fully described my improve ment in gun-locks, what I claimtherein as new, and desire to secure by Letters Patent, is-

1. The combination, with the tumbler of a lock, of the jointed levers fand 7c, and the spring I), substantially in the manner, and for thepurpose herein set forth.

2. The set-screw j, arranged in such a manner in relation to the jointedlevers f and k, the sear c, and the tumbler d, that by its adjustmentthe cock can be detached from its cocked position by a greater or lessexercise of power upon the trigger, substantially as herein set forth.

The above specification of my improvement in day of July, 1858.

JAMES HULTS.

-Witnesses:

LEWIS R. Rvlnv'r, SAMUEL M. Ronnnrs.

gun-locks signed and witnessed this 21st

